1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #include <sys/types.h> 27 #include <sys/param.h> 28 #include <sys/stat.h> 29 #include <sys/statvfs.h> 30 #include <sys/sysmacros.h> 31 #include <libintl.h> 32 #include <string.h> 33 #include <stdlib.h> 34 #include <stdarg.h> 35 #include <stdio.h> 36 #include <errno.h> 37 #include <dlfcn.h> 38 #include <link.h> 39 40 #include "utils.h" 41 42 static void *lib_hdl = NULL; 43 44 static const char PNAME_FMT[] = "%s: "; 45 static const char ERRNO_FMT[] = ": %s\n"; 46 47 static const char *pname; 48 49 /*PRINTFLIKE1*/ 50 void 51 warn(const char *format, ...) 52 { 53 int err = errno; 54 va_list alist; 55 56 if (pname != NULL) 57 (void) fprintf(stderr, gettext(PNAME_FMT), pname); 58 59 va_start(alist, format); 60 (void) vfprintf(stderr, format, alist); 61 va_end(alist); 62 63 if (strchr(format, '\n') == NULL) 64 (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err)); 65 } 66 67 /*PRINTFLIKE1*/ 68 void 69 die(const char *format, ...) 70 { 71 int err = errno; 72 va_list alist; 73 74 if (pname != NULL) 75 (void) fprintf(stderr, gettext(PNAME_FMT), pname); 76 77 va_start(alist, format); 78 (void) vfprintf(stderr, format, alist); 79 va_end(alist); 80 81 if (strchr(format, '\n') == NULL) 82 (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err)); 83 exit(E_ERROR); 84 } 85 86 const char * 87 getpname(const char *arg0) 88 { 89 const char *p = strrchr(arg0, '/'); 90 91 if (p == NULL) 92 p = arg0; 93 else 94 p++; 95 96 pname = p; 97 return (p); 98 } 99 100 int 101 valid_abspath(const char *p) 102 { 103 if (p[0] != '/') { 104 warn(gettext("pathname is not an absolute path -- %s\n"), p); 105 return (0); 106 } 107 108 if (strlen(p) > MAXPATHLEN) { 109 warn(gettext("pathname is too long -- %s\n"), p); 110 return (0); 111 } 112 113 return (1); 114 } 115 116 /* 117 * Wrapper for dlopen'ing a library. 118 * The caller must call closelib() once 119 * access to the library is no longer needed. 120 */ 121 void * 122 openlib(const char *lib) 123 { 124 lib_hdl = dlopen(lib, RTLD_LAZY); 125 return (lib_hdl); 126 } 127 128 void 129 closelib() 130 { 131 if (lib_hdl != NULL) 132 (void) dlclose(lib_hdl); 133 } 134